It's bitterly cold in Yorke and Rose Raventhorpe and her butler are stuck showing Rose's ghastly cousin Herbert around the city.

During a service at Yorke's Cathedral, a young boy bursts in, declaring that his sister has been kidnapped. Soon Rose finds herself tangled up in a mystery involving fake antiques, a malodorous factory and a secret society of chimney sweeps.

Tea is brewing and so is murder.